有以下几种写法:
# 一般的写法
APPDB =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.0.35)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = appdb)
)
)
# 明确标明用dedicated方式连接数据库
APPD=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.0.35)(PORT=1521))
(CONNECT_DATA=
(SERVICE_NAME=appdb)
(SERVER=DEDICATED)))
# 对多个listener端口做均衡负载方式连接数据库
APPS =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.0.35)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.0.35)(PORT = 1856))
)
(CONNECT_DATA =
(SERVICE_NAME = appdb)
)
)
# 注意:如果数据库服务器用MTS,客户端程序需要用database link时最好明确指明客户端用dedicated直连方式,
# 不然会遇到很多跟分布式环境有关的ORACLE BUG。
# 一般情况下数据库服务器用直接的连接会好一些,除非你的实时数据库连接数接近1000。
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